> I somehow get the feeling that SoftBank and Masayoshi Son aren’t great at investing and have managed to throw a whole lot of money aggressively into ventures that any common person would doubt about returns, scaling, etc. At the same time, it has sold off what could continue to be profitable, like ARM Holdings.

Case in point: they bought ARM for $32B in 2016 and recently sold it for $41B. The S&P500 performed better over the same time period.

(I don't think they sold at a bad price; I think they massively overpaid for buying it. ARM was a prime takeover target back then and you could see that in its valuation, and SoftBank paid a hefty premium even on that.)